使用 Cypress.io 对我自己的节点模块进行单元测试时出错

Question

. I was able to start using Cypress to unit test my Node's module by using the task() 方法。但是，我遇到了一个错误，我一直在尝试调试或在线查找参考，但我无法做到。

cy:command ✘  assert    expected **{ Object (userInvocationStack, specWindow, ...) }** to equal **[]**

这是什么{ Object (userInvocationStack, specWindow, ...) }？我怎样才能得到 objects 的实际 array 呢？

编辑： 包括 assertions & task 代码。

文件:utils.spec.js

describe('Unit Tests for utils.js methods', () => {
  /**
   * Array of objects mocking Tickets Object response
   */
  const mockedTickets = {
    data: {
      issues: [
        {
          id: 1,
          key: 'ticket-key-1',
          fields: {
            summary: 'This is ticket number 1',
          },
        },
        {
          id: 2,
          key: 'ticket-key-2',
          fields: {
            summary: 'This is ticket number 2',
          },
        },
      ],
    },
  };

  const mockedEmptyTicketsArray = [];

  it('returns an array containing a found ticket summary', () => {
    expect(
      cy.task('getTicketBySummary', {
        issues: mockedTickets,
        summaryTitle: 'This is ticket number 1',
      })
    ).eq(mockedTickets.data.issues[0]);
  });
  it('returns an empty array, when no ticket summary was found', () => {
    expect(
      cy.task('getTicketBySummary', {
        issues: mockedTickets,
        summaryTitle: 'This is ticket number 3',
      })
    ).eq(mockedEmptyTicketsArray);
  });
});

文件：`plugins/index.js

on('task', {
    getTicketBySummary({ issues, summaryTitle }) {
      issues.data.issues.filter(issueData => {
        return issueData.fields.summary === summaryTitle ? issueData : null;
      });
    },
  });

Answer 1

如评论中所述，您在之前的回答中给出了错误的语法。

Cypress 任务是 returns 可链接的命令。需要用.then()取值，所以调用顺序要不同

it('returns an array containing a found ticket summary', () => {

  cy.task('getTicketBySummary', { issues: mockedTickets, summaryTitle: 'This is ticket number 1' })
    .then(result => expect(result).to.eq(mockedTickets.data.issues[0]) );

});

Answer 2

我能够通过像这样返回 task 的值来解决问题：

文件: plugins/index,js

on('task', {
    getTicketBySummary({ issues, summaryTitle }) {
      return issues.data.issues.filter(issueData => {
        return issueData.fields.summary === summaryTitle ? issueData : null;
      });
    },
  });

在我更新我的代码以使用 then() 方法并断言传递的 param 值之后，像这样：

文件: utils.spec.js

it('returns an empty array, when no ticket summary is found', () => {
    cy.task('getTicketBySummary', {
        issues: mockedTickets,
        summaryTitle: 'This is ticket number 3',
     }).then(result => expect(result).to.deep.equal(emptyArray));
});

使用 Cypress.io 对我自己的节点模块进行单元测试时出错

Getting error while unit testing my own Node modules with Cypress.io

javascript

unit-testing

mocha.js

node.js

cypress